Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4348336 | Process for the isolation of 1-naphthylamine-4,6- and 1-naphthylamine-4,7-disulphonic acid | Heinz U. Blank, Horst Behre | 1982-09-07 |
| 4338261 | Process for the preparation of 1-naphthylamine-4,6-disulphonic acid and 1-naphthylamine-2,4,6-trisulphonic acid | Heinz U. Blank, Horst Behre, Werner Mentzel | 1982-07-06 |